Docsity
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Docsity AI
Docsity AI
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search for your university

Find the specific documents for your university's exams

Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

Cell Membrane & Tonicity Worksheet: A Comprehensive Guide to Cell Structure and Function, Summaries of Cell Biology

Texas A&M University (A&M)Cell Biology

Cell Membrane & Tonicity Worksheet ... Correctly color code and identify the name for each part of the cell membrane. Letter. Name/Color. Letter. Name/Color.

Typology: Summaries

2022/2023

Uploaded on 03/01/2023

thehurts
thehurts 🇺🇸

4.5

(11)

219 documents

1 / 4

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
1
NAME_____________________________
DATE_________________ PERIOD_________
Cell Membrane & Tonicity Worksheet
Composition of the Cell Membrane & Functions
The cell membrane is also called the _______________ membrane and is made of a
phospholipid _____________. The phospholipids have a hydrophilic (water attracting)
__________ and two hydrophobic (water repelling) ____________. The head of a
phospholipid is made of an alcohol and __________ group, while the tails are chains of
____________. Phospholipids can move _______________ and allow water and other
_________ molecules to pass through into or out of the cell. This is known as simple
____________ because it does not require __________ and the water or molecules are
moving __________ the concentration gradient.
SKETCH AND LABEL a
phospholipid coloring
the heads red and the
tails blue.
Another type of lipid in the cell membrane is ______________ that makes the membrane more fluid.
Embedded in the phospholipid bilayer are __________ that also aid in diffusion and in cell recognition.
Proteins called _____________ proteins go all the way through the bilayer, while ____________ proteins are
only on one side. Integral proteins are also called __________ proteins. Large molecules like ___________ or
carbohydrates use proteins to help move across cell membranes. Some of the membrane proteins have
carbohydrate __________ attached to help cells in recognize each other and certain molecules.
List 4 functions of the cell or plasma membrane:
a.
_________________________________________
b.
_________________________________________
c.
_________________________________________
d.
_________________________________________
Correctly color code and identify the name for each part of the cell membrane.
Letter
Name/Color
Letter
_____
Phospholipid bilayer (no color)
_____
_____
Integral protein (pink)
_____
_____
Fatty acid tails (orange)
_____
_____
Phosphate heads (yellow)
_____
Match the cell membrane structure or its function with the correct letter from the cell membrane diagram.
Letter
Structure/Function
Letter
Structure/Function
_____
Attracts water
_____
Repels water
_____
Helps maintain flexibility of membrane
_____
Make up the bilayer
_____
Involved in cell-to-cell recognition
_____
Help transport certain materials across the
cell membrane
pf3
pf4

Partial preview of the text

Download Cell Membrane & Tonicity Worksheet: A Comprehensive Guide to Cell Structure and Function and more Summaries Cell Biology in PDF only on Docsity!

NAME_____________________________ DATE_________________ PERIOD_________

Cell Membrane & Tonicity Worksheet

Composition of the Cell Membrane & Functions The cell membrane is also called the _______________ membrane and is made of a phospholipid _____________. The phospholipids have a hydrophilic (water attracting) __________ and two hydrophobic (water repelling) ____________. The head of a phospholipid is made of an alcohol and __________ group, while the tails are chains of ____________. Phospholipids can move _______________ and allow water and other _________ molecules to pass through into or out of the cell. This is known as simple ____________ because it does not require __________ and the water or molecules are moving __________ the concentration gradient. SKETCH AND LABEL a phospholipid coloring the heads red and the tails blue. Another type of lipid in the cell membrane is ______________ that makes the membrane more fluid. Embedded in the phospholipid bilayer are __________ that also aid in diffusion and in cell recognition. Proteins called _____________ proteins go all the way through the bilayer, while ____________ proteins are only on one side. Integral proteins are also called __________ proteins. Large molecules like ___________ or carbohydrates use proteins to help move across cell membranes. Some of the membrane proteins have carbohydrate __________ attached to help cells in recognize each other and certain molecules. List 4 functions of the cell or plasma membrane: a. _________________________________________ b. _________________________________________ c. _________________________________________ d. _________________________________________ Correctly color code and identify the name for each part of the cell membrane. Letter Name/Color Letter Name/Color _____ Phospholipid bilayer (no color) _____ Peripheral protein (red) _____ Integral protein (pink) _____ Cholesterol (blue) _____ Fatty acid tails (orange) _____ Glycoprotein (green) _____ Phosphate heads (yellow) _____ Glycolipids (purple) Match the cell membrane structure or its function with the correct letter from the cell membrane diagram. Letter Structure/Function Letter Structure/Function _____ Attracts water _____ Repels water _____ Helps maintain flexibility of membrane _____ Make up the bilayer _____ Involved in cell-to-cell recognition _____ Help transport certain materials across the cell membrane

Define osmosis. _____________________________________ In which direction does water move across membranes, up or down the concentration gradient?

Define these 3 terms: a. isotonic- _____________________________________ b. hypertonic _____________________________________ c. hypotonic _____________________________________ Use arrows to show the direction of water movement into or out of each cell. Color and label the cell in an isotonic environment light blue, the hypotonic environment yellow, and the hypertonic environment light green. Match the description or picture with the osmotic condition: A. Isotonic _____ solution with a lower solute concentration _____ solution in which the solute concentration is the same B. Hypertonic _____ condition plant cells require _____ condition that animal cells require C. Hypotonic _____ red blood cell bursts (cytolysis) _____ plant cell loses turgor pressure (Plasmolysis) _____ solution with a higher solute concentration _____ plant cell with good turgor pressure _____ solution with a high water concentration **_Label the tonicity for each solution (isotonic, hypotonic, or hypertonic):

Transport Requiring Energy_** What type of transport is represented by the following picture? _______________________ What energy is being used? ______________ In which direction (concentration gradient), is the movement occurring? _________________ Color the internal environment of the cell yellow. Color and Label the transport proteins red and the substance being moved blue.

Solution A , we would expect no change in the cells, because Solution A is ___________ to the cytoplasm of each cell.

  1. Let’s put both cells into Solution B. Because Solution B is hypertonic to the cytoplasms of the cells, we would expect water to __________ the cells through the process of ____________. This would result in the cytoplasm of both cells shrinking.
  2. Now we’ll put both the plant and animal cell into Solution C , which, because it contains no solutes at all, is ___________________ to the cytoplasm of both cells. __________________ will enter both cells through osmosis. The animal cell is likely to ______________, unfortunately. The plant cell , however, is protected from this because of the presence of its ________ _________. Refer to the U-tube pictures above when answering the questions below.
  3. Why did the number of water molecules on each side of the membrane change, whereas the number of sugar molecules stayed the same?
  4. How does the plasma membrane of a cell compare with the membrane in the U-shaped tube?
  5. Explain the behavior of water molecules in the isotonic solution.
  6. Does osmosis occur if a cell is placed in an isotonic solution?
  7. Why does water enter a cell that is placed in a hypotonic solution?
  8. What happens to the pressure inside a cell that is placed in a hypertonic solution?
  9. What can happen to animal cells when placed in a hypotonic solution? Explain.
  10. What causes a plant to wilt?